一种病理诊断知识获取的RS混合算法

针对医学诊断知识获取问题，提出了基于Rough Sets理论的知识获取方法，利用该理论对数据进行分析，推理出可能规则，并提出了一种概率优化规则。通过实例分析，具体说明了该方法的实现步骤，包括连续信息系统的离散化、信息系统的约简、决策规则提取、决策模型生成等，讨论了知识处理的完整过程，能够有效地解决专家系统中知识获取的瓶颈问题。为人工智能技术在医学诊断领域的应用提供了新的思路。     

基于一般关系下的双论域变精度粗糙集模型

通过引入迪卡尔乘积,定义了双论域上的一般关系及其迪卡尔乘积多数包含关系,提出了一般关系下的双论域变精度粗糙集模型,这是对一般关系下的双论域粗糙集模型的推广;最后讨论了与该模型相关的性质.     

Beyond the Given: Stretching Mathematical Thinking Through Journaling

This paper reflects on a teaching experiment and presents details of a pedagogical technique where students periodically write down their clearest interpretation of the conditions imposed on various discrete mathematical subjects they are learning in class. Through iterations, students generate a more complete understanding of the material, one that they themselves can justify. This experiment was conducted in the Discrete Mathematical Structures course; as it contains several subtopics, each of which uses a discrete set of elements with specific conditions. The textbook does not mention how those conditions are effectively put to use, and often uses the natural numbers as the default domain. Students are required to identify in their journals the exact properties that the elements need to have, justify how they are being put to use, and in ambitious cases attempt to sharpen them if possible. This activity can be adapted to different contexts and is not specific to the topic of Discrete Mathematical Structures.     

基于聚类分析的粗糙集模型及其应用

将聚类分析方法和粗糙集理论相结合,建立了一种基于聚类分析的粗糙集模型,该模型能够删除冗余的数据且保留必要的数据,起到对数据进行预处理的作用,使得属性和属性值约简后的规则更加简练．     

有关基础集扩张的几个问题

就有关基础集扩张的几个问题进行一些必要的讨论,主要有基础集扩张类、基础集扩张的积、基础集标准扩张及一点扩张,分别得到了一些重要的结果,且可应用于各类具体的代数     

联系数定义的改进

从联系数的角度看到联系数的重要性,列出已有的几个联系度与联系数定义和注释,发现了其中存在的一些问题,提出改进的定义,同时重新定义了联系度和联系数的阶数,指明了新旧定义的联系及区别。     

基于可变模糊集的质变与量变定理

根据可变模糊集理论率先给出唯物辩证法哲学三大规律之一：质量互变规律的严密的数学定理——质变与量变定理。指出可变模糊集相对差异函数与集对分析差异度的区别。     

关于当代世界男子单杠成套动作发展特征的研究

以第41届世界体操锦标赛和北京奥运周期3次体操大赛单杠决赛运动员为研究对象,对当代世界男子单杠成套动作的发展特征做了全面分析.结果显示,单杠成套动作的难度与比赛成绩成正相关,平均D分接近7.0分,仍有一定的提升空间,最高D分达到7.5分,是单杠(乃至男子各个项目)成套动作难度的世界纪录;继续提高动作难度的主要途径:一是增加G、F组高难飞行动作,二是增加飞行动作的连接,二者有逐渐结合的趋势,并向连接难度价值更高的空翻越杠类动作发展;下法动作开始呈现多样化特征,其落地稳定性不再是获得最好成绩的关键因素,而是在增加(或既定)成套动作难度的前提上,努力提高完成动作的成功率,特别是动作部位的准确性和身体姿势的正确性,将成为获得优异成绩的关键.     

不分明化拓扑中的S—紧性

在不分明化拓扑中利用半开集的概念刻画了S——紧性,得到了一些类似于紧性的结果。     

Structured reflection breaks embedded in an online course – effects on learning experience,time on task and performance

The purpose of this article is to gain an insight into the effects of practicing short, frequent, and structured reflection breaks interspersed with the learning material in a computer-based course. To that end, the study sets up a standardized control trial with two groups of secondary school pupils. The study shows that while performance is not affected by these embedded “reflection rituals,” they significantly impact time on task and perceived learning. The study also suggests that the exposure to such built-in opportunities for reflection modifies the engagement with the content and fosters the claimed readiness for application of a similar reflective approach to learning in other occasions.